Refrigerant system operation sequences for leak prevention
AssigneeCarrier Corporation
InventorsTingcan Mi, Hai Tian, Hui Li, Chengwei Tang
Life of this patent
Estimating the term…
Abstract
A method of shutting down a refrigeration system including: initiating a shutdown process of the refrigeration system; closing a first valve within a refrigerant circuit of the refrigeration system; operating a compressor within the refrigerant circuit; detecting a suction pressure within the refrigerant circuit; closing a second valve within the refrigerant circuit of the refrigeration system when the suction pressure is below a threshold suction pressure; and stopping operation of the compressor.
Claims10
A method of shutting down or defrosting within a refrigeration system having a compressor, condenser, expansion valve and evaporator, the method, comprising:
- initiating a shutdown process or a defrost process of the refrigeration system;
- closing a first valve within a refrigerant circuit of the refrigeration system;
- operating a compressor within the refrigerant circuit;
- detecting a suction pressure within the refrigerant circuit;
- closing a second valve within the refrigerant circuit of the refrigeration system when the suction pressure is below a threshold suction pressure;
- and
- stopping operation of the compressor;
- wherein the first valve is located within the refrigerant circuit between a condenser and an evaporator, and wherein closing the first valve stops flow of refrigerant from the condenser to the evaporator;
- wherein the second valve is located within the refrigerant circuit between the compressor and a condenser, and wherein closing the second valve, when the suction pressure is below a threshold suction pressure, stops flow of refrigerant from the compressor to the condenser.
Dependencies are inferred from the claim text.